Home / 2,742.68-3,784.38-1,681.04

Finding the Fourth Proportional to 2,742.68, 3,784.38 and 1,681.04

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Solution

The fourth proportional to 2,742.68, 3,784.38 and 1,681.04 is: 2,319.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.68 : 3,784.38 = 1,681.04 : x
  2. Step 2: Convert to fraction form
    2,742.68/3,784.38 = 1,681.04/x
  3. Step 3: Cross multiply
    2,742.68x = 3,784.38 × 1,681.04
  4. Step 4: Simplify right side
    2,742.68x = 6,361,694.16
  5. Step 5: Solve for x
    x = 6,361,694.16/2,742.68
  6. Step 6: Final answer
    x = 2,319.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.